Portable drilling or tapping machine.



" No. 723,267. PATENTED MAR. 24, 1903.

H. J. GOSLING.

PORTABLE DRILLING 0R TAPPING MACHINE.

APPLICATION FILED JAN. 27, 1902. no MODEL. t 2 SHEETS-SHEET 1.

gmmm INvEN-mfi. Tv

m: Noam: PETERS ca, Maruumo wnsmumcn D c No. 723,267; VPATENTED MAR-24,1903. L H. J. GOSLING.

PORTABLE DRILLING 0R TAPPING MACHINE.

I APPLICATION FILED JAN. 27, 1902.

no MODEL. 2 SHEETS-SHEET 2,

L Aj-I'TEE'T I INVE TDF 1 "F/ enr y Goslin LY WW 4m UNITED STATES PATENT OFFICE.

' HENRY J. GO SLING, OF CLEVELAND, OHIO.

PORTABLE DR-ILLINIGH'ORTAPPING MACHINE.

SPECIFICATION forming part of LettersRatentNo; 723,267, dated March 24, 1903.

Application filed J'anuary27, 1902. Serial ms. 91,426. (No model.)

To wZZ whom it may concern: v Beitknown thatI,HENRYJ.GosLING,acitizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of,

Ohio, have invented certain new and useful ImprovementsinPortable Drilling or Tap-. ping Machines; and I do declare that the fol-- lowing is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a portable drilling or tapping machine intended more particularly to be useduin the electrical equipment of railways,.but notnecessarily confined to such use. a r

i It is now a common practice in electricallyoperated railways to utilize the rails in making the electric circuit to and from the poWerto bond the rails to make connections and complete thecircuit; and the object of my'invention is to provide a portable mechanism constructed andarranged fortapping or drillingthe necessary bonding-holes in the ends of the rails as they are found in permanent position on the track for use.

applies also to roads already built where bonding is to be done, as well to roads newly laid and when the paving has not yet been put down.

Referring to the d rawings, Figure l is a side.

elevation of myimproved machine shown as in use. Fig. 2 is a side elevation, partly in section, on the vertically-disposed drive-shaft supporting the parts. Fig. 3 is a cross-section looking down on a-line m 56, Fig. 2. Fig. 4: is a sectional view of the bearing-sleeves and channel-bar for supporting the drill. Fig. 5 is an end elevationwith the rails in cross-section and showing-the drill and its supporting and operating parts as in their working relation with one of said rails. Fig. dis a detailed view of the yoke and feedscrew for holding the drills in working relation with the rail. Fig. 7 is a perspective This of; course view of the framework which supports and carries the drills to their work. Fig. 8 is a reduced end view corresponding to Fig. 5, but having a modified form of flexible shaft confined within a sleeve D, which is supported 1 from a fixed bearing (1 at its top and head d at its bottom, and gear connection is made above bearing d with the drive-shaft E. The

said shaft is horizontally supported on arm d rigid with bearing d, as shown here, and.

suitable braces d engage bearing d from different directions and. give rigidity and strength to the structure- In this mechanism. a set of two drills G is used, and the mechanism having-to do immediately with said drills are supported entirely from sleeve d by a framework comprising in this instance a bar/l of channel-iron, on the bottom of which are bolted. or otherwise secured bearing-sleeves 5 for said drills or tools G, and thesaid baris carried by a pair of arms 0, pivotally supported on collar 3 on sleeve D, and a pair of hangers hand h,

suspended from the ends of arms 0 and engaged with the ends of drill or tool bearing 1 bar 4. Stay-rods h having turnbuckle k for fixing their length, are connected with collar 2 on sleeve D at one end and with the extremities of arms 0 at the other, and a rod or bar N unites the extremities of said arms. The said tools G have spindles 6 and flanges 7, with antifriction-balls 8 to take the endwise thrust, and are provided with flexible shafts H, engaged with spindles Get one end.

said gear L may be arrangedso as to run This gear mesheswith gear L on drive-shaft D, and, if preferred, the

either one or both gears J atatime. Usually and preferably Iwork both drills at the same time and can thus drill two holes in the same rail at dilferent distances from its ends. If preferred, the drill-bearings 5 may be made adjustable in the plate or bar 4, so as to set them nearer together or farther apart, and the angle at which they Work may be changed within limits through hangers h, which are shown as slotted for this purpose at their upper ends and are secured upon the ends of rod N by screws and nuts. The hangers 7t and h are suitably cross-braced for-strength. These are the present particulars in the support for drills G and carrying-bar 4; but obviously they may be very considerably varied or substituted and remain within the spirit of my invention, for the essential thing is a suitable support for the drills, which will sustain them in a working relation substantially as shown in respect to each other and the ,track or rail to be operated upon and which will adapt them to be rotated to either or both 'sidesof track A, so as to work first on one side and then on the other, as may be pre-' ferred. In such operation collars 2 and 3 rotate on their bearings and the entire drillcarrying frame turns from side to side.

The gears J are supported by curved arms 10, integral or rigid with collar 3 and arranged to bring the bearings for said gears down into the plane of gear L and into mesh therewith. Here, again, as Well as elsewhere in the machine, the mechanism thus minutely described may be more or less materially changed or altered in form and style and yet be the full equivalent of what I show and describe and wholly within my invention.

The entire drillsupporting frame is pivoted, so as to be swung bodily back and forth in respect to the rail on which the drill operates, and this swinging is further accommodated by the flexible shafts H. The drills are held to their work by means of a yoke K of substantially U shape, pivoted on an arm 12 on drill-carrying bar or head 4 and provided with a feed-screw and hand-wheel 14 through the outer arm of the yoke and adapted to bear against the outside of the rail.

The car or carrier, which may be any suitable carrier, is adapted to run or slide on a car-track or to support the other parts substantially in the relation shown.

The planetary arrangement of gears J and L as here shown allows the drill-carrying frame to be swung around from one side of the track to the other without in any wise affecting their working relation.

It will be noticedthat the carrier or car A is built out at its rear with an extension of such length and strength as will sustain the working parts of the machine and that said working parts come mostly or wholly behind the rear wheels. I might vary this and arrange them between the front and rear wheels; but the present construction is preferred.

In Fig. 8a modified form of flexible shaft connection leading from planetary gears L and J to the drills G is shown. The curved arms 10, integral with collar 3, are in this case extended and constructed to carry the vertical shaft 20, which has gear J fastened to its top and a beveled gear to its bottom. The beveled gear meshes with the beveled gear 19, splined upon the horizontal shaft 18, supported to slide in the lower portion of arms and connecting-shaft 17, having knuckles 15 and 16, providing the flexible connection between the drills G and the planetary gears to permit the forward feed while drilling.

When the drills G have moved substantially through the web of the rail, the pressure of the feed-screw is likely to cause the 4 each end with a rubber-tipped arm 21, which 7 bears against the rail and yields sufliciently to let the drill go through the web to complete its work in a natural manner. These arms also steady bar 4 to make both drills feed uniformly.

What I claim is 1. The car adapted to be moved along on a track and drill supporting and actuating mechanism thereon consisting of a vertical power-driven shaft and connections therefrom to rotate the drill, a jointed support for the drill having rotatable bearings on said shaft and constructed to swing the drill to either side of the track, said jointed support comprising the arms 0, the drill-carrying part 4 and the hangers pivotally connected therewith and with said arms, and means to adjustably fix the elevation of the extremities of said arms, substantially as described.

2. The car and the drill-supporting frame secured upon the rear of the car and means to operate the drill, said means comprising a vertical power-driven shaft D having fixed hearings on the car and connections therefrom to engage the drill, and the said drill-supporting frame comprising pivotally-mounted arms 0, a drill-support 4 and hangers h and 7t carrying said support front and rear and adj nstably connected with said arms, substantially as described.

3. Means for drilling railway-rails when down on a track, comprising a car and a drill and drill -carrying mechanism constructed and arranged to hold the drill in a horizontal position opposite the web of a rail, said mechanism comprising rigid shaft D supported on said car, a substantially horizontal drillsupport t, a jointed frame carrying said drillsupport and rotatably engaged upon said shaft and means operatively connecting said shaft with the drill,substantially as described.

Witness my hand to the foregoing specification this 10th day of January, 1902.

HENRY J. GOSLING.

Witnesses:

R. 13. MOSER, T. M. MADDEN.

IIO 

